What type of heel wedge is created by a lateral Kirby skive?

• A. Neutral
• B. Valgus
• C. Varus
• D. Supinated

Answer: (B)

A lateral Kirby skive is specifically designed to create a varus heel wedge. This technique involves modifying the orthotic device to incorporate a lateral skive, which effectively tilts the heel medially. By creating this medial inclination, the skive counteracts excessive pronation of the foot by shifting the weight distribution laterally. This adjustment is particularly beneficial in conditions where there's a need to control foot mechanics and realign the subtalar joint.

In practical application, the varus heel wedge helps in stabilizing the subtalar joint, promoting foot alignment, and can also aid in reducing discomfort associated with various foot conditions that manifest due to misalignment. The outcome is an orthotic that enhances biomechanical function, particularly improving the overall stability of the foot during weight-bearing activities.

The other options do not accurately reflect the outcome of a lateral Kirby skive. A neutral wedge would not include any specific correction in terms of varus or valgus alignment; a valgus wedge would lean the heel laterally rather than medially; and a supinated wedge aligns more with foot positioning that contrasts with a varus wedge by aiming for lateral weight distribution rather than medial. Thus, understanding the biochemical principles involved helps clarify that a lateral Kirby skive indeed produces a var